he66666
  • he66666
Grade 12 vectors: velocity? Mary leaves a dock, paddling her canoe at 3 m/s. She heads downstream at an angle of 30 degrees to the current, which is flowing at 4 m/s. How far downstream does Mary travel in 10s? Answer: about 66m How do you solve this? I don't know how to draw the diagram...
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
amistre64
  • amistre64
we know magnitude and direction of both vectors right?
anonymous
  • anonymous
hey amistre got ya another one above this q when ur done mate
amistre64
  • amistre64
we also have a scalar of 10

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

amistre64
  • amistre64
scale the vectors then add them 30 degrees = has a unit vector of so at 3 = <3sqrt(3),3> 10<3sqrt(3),3> + 10<0,4> = <30sqrt(3),30> < 0 ,40> --------------- <30sqrt(3), 70> right?
amistre64
  • amistre64
the magnitude of this vector should be the distance traveled
amistre64
  • amistre64
sqrt(70^2 + 30sqrt(3)^2) sqrt(4900 + 900(3)) sqrt(7600) right?
amistre64
  • amistre64
87.1779... to find the distance travled downstream tho, we take this distance and multiply it by the cos(30) to get a vector projection
amistre64
  • amistre64
what i come up with is: 75.49 but then I could be wrong
amistre64
  • amistre64
did you typo the question?
he66666
  • he66666
No, there's no typo. But thanks amistre! :)
anonymous
  • anonymous
ok i have a Q, how far did she paddle on the horizon before she went to the 30 degree angels downstream, some data is missing i believe

Looking for something else?

Not the answer you are looking for? Search for more explanations.